Electric riveting apparatus.



F. P. 110115111. ELECTRICv RIVETING APPARATUS. -Mvucnmu, man 11111L s1. 19.14.111511Ew5n ocT. 1, 1914. 1,139,300. Patented 1111y11,1915.I

3 SHEETS-SHEET l.

F. F. KUBERT.

ELECTRIC RIVETING APPARATUS.

APPLlcATloN man 11111.51. 1914. niufwmoc. 1. 1914.

. 1,139,300. Ptemd May 11, 1915.

3 SHEETS-SHEET 2.

Fra/L l? Kobert., w1, ai, @if m4.

F. P. KOBERT.

ELECTRIC RIVETING A'PPARATUS. APPLICATION HLED 11111.13. 1914. RENEWED ocT. I. 1914.

1,139,300. 'Patented May11,1915.

3 SHEETS-SHEET 3.

-i- 5- d? rg 959.2495

r- 'Il "inganna uNiTnn STATES PATENT onirica.

' FRANK 1. KoBEn'rgoF NEW HAVEN, CONNECTICUT.

:Enncfrnro RIVETING Arianna-ans.

" To'all ttflromjit'mag/ concern:

Befit'lnoun'thatI, FRANK P. KOBERT, a iz'en oftheUnited States, and residing at 'Beni i, in fthe county'ofl New Haven 'andiSta f Connecticut, have invented certain neu and useful 'lmprovementsin Elec- 'tric RivetlinglApparatus, of which the following is" aspecilicatiom such as Will enable those skilled in kthe art to-Which it apper- Yuse in electric riveting, and the object there- Uot'is vtopi-Ovide an improved apparatus of this class vwhich is' simple in construction and convenient of operation, and which may he ,easily manipulated by any one having a knowledge .of this class of'apparatus; a

` further object being to provide an apparatus of `the class specified, which involves the principles, construction and operationof a powenpress, modified in order to adapt it te theobject and uses of this invention, and with, these and other objects in View the @invention consists `in an apparatus of the ,class specified constructed as hereinafter de I-scribed and claimedl 'un invention in ffnuy 'disclosed in an lfollowing speciiication, of which the accom- ;panying drawings form a part, inwhich the :'eparateparts ofiny improvement are vdesignated' by suitable. reference characters in nach of the views, and in Which;-'

`lfgrure le is aside view of an apparatus i involvingfiny invention, with part of the vso therethrough construction' in section and part broken away-Fig. SZ a front' vie-W 'of the said ap- .in dilerentf, i

and shoi'vin'g nomination; n comprising a as onstruction, a .cted table me vIn the any suitabing a lforiva l Specication of Letters Patent t forms the at the oppositesides of which are upright members a3' at the topfr of which are front and backz'bearings a4 andasy in which is mounted Ythe usual shaft b provided at its frontend livith'a crank b2. lIfhe bearing a* keepers aand lmount-ed in said headrga'nd held 1n plaCeiliy*saidl keepers, 4is avertically 'movable Slide b3, andthe slidebs is iprovided "with anelongated bearing chamber b* in which the crank b2 of the shaft boperates, and said bearing chamber is provided with ananti-friction .bushing b". vThe lslide bs is also provided, yin the construction shown,

with parallel-fbreaking ribs-be, and said slide is also provided `at'its Llcpivfer end with an oblong headfz7 iwhich is'setht an an le 'to the front ofthemachinealilprovide- ',vvith acentral tra 'averse'V chamber -bfopenat both ends. y The mainii'frame of the machine is also provided above the table a with a transverse support fu, and mounted centrallyof said support is a vertical shaft c, secured in said support by a set screw c2 and provided in theltop of the main frame with a bearing 03, and,y mountedv .on the' kshaft jo 'is' a rotary sleeveiv'prov-ided with backWardly directed arnr` fvigf' and with" avforwardly diirected platef ailifprovided iwith' reinforcing i l P aten-tedMay 11,1915. Application aina January 5, 1914, semi No. 810,278. Renewed oeabi i; 1914. serial No. insisto.y i

do is providedW-ith a ifi-ont raisedreoiaugular 5 head a to wvliichflare secured 'vertical vside i plunger Z2 projficiled` at its upperfendy with 'f a, head dsmovableqin; the 1 chamber o8 .the head -Z'of rthenslide b?, andy in theb'ott'miof said head l is; nfslot Z2 adapted to receive lunger d2 is provide he lower end d5 off-'fthe ,lith adjusting andzgflocler plunger l? extends'b low said bearing and nuvhaof #The `plate 3 'f central ,slot .o aperture,cylyth-roughn passes .ari-arm anniv. ,g1 tpg/said plete, and said arntpassesa ag end with a weight e3, and said arm e'xtends forwardly of the machine and is provided with a handle 6*.

A pin e5 is mounted in the bearings c9 and ro and movable vertically therethrough or therein, and said pin is pivoted to the arm c at e, and the lower end of the pin e5 is provided with a flat head e7 to the bottom of which is secured a plate e8 provided centrally with a depending electrode e9, it being understood that the plate es forms a part of said electrode, and secured between the head eT and the plate| es is a copper conductor f which is connected with an electrical transformer f2 supported in the framework of the machine, and rearwardly of the table a2.

Secured on the rear end of the arm c5 is a plate g, a top plan view of which is given in Figs. et and 7, and a bottom plan view inFig. 6, and said plate is provided in one end with an aperture g2.

A cross plate g3 is secured transversely of the frame of the machine at the back thereof and above the support a8, as shown in Fig. 3, and this plate is provided with a central vertical bearing g* through which is passed a vertically movable pin g5 pivoted to an arm g which is pivoted to one side of the frame at gl, and extends transversely of the back thereof, and the other end of the arm g is provided with a spring gs securedv to a support .tf/9 at the top of the frame.

The rear end of the shaft Z) is provided with a brake device g1 comprising a drum and a brake lever g, and pivoted at gm is a brake release arm z `provided at its lower end with a pivoted pin 71.2 connectedvwith the arm go at h3, and connected with the free end of the arm g is a rod 7L* which extends downwardly to the base of the frame and is connected at h5 to a foot lever device LG secured at ILT in the usual or any preferred manner.

The pin g5 passes entirely through the bearing g, and the lower end thereof is adapted to enter the aperture g2 in the plate g, when the arm c is in the position shown in full linesp'n Figs. 6 and 7.

The sleve c4, the arm c5 and the forwardly directed plate 0G connected with said sleeve, form a central rotary member, and the sides a3 of the frame are provided at the front thereof, and in the plane of the bottom of the plate cG or the bottom flange c8 thereof with forwardly directed bearings a?, and mounted horizontally in said bearings are transversely adjustable bolts or screws 71.8, the inner end portions if of which form stops' to limit the swing of the said rotary member, in which operation the bottom of the plate g, or the flange c8 thereof comes in connection with said stop's.

Mounted on the tablea2 is a die 'bed which is movable forwardly and backwardly on said table, and adjustable into different positions, and said die bed is provided on the bottom thereof with a tongue'portion 2 movable in a corresponding groove construction 'i3 in the table member, and in which it is held by set screws i. The die bed t' is'provided at one side with a raised bearing i in which is mounted an adjustable screw bolt i, and at the opposite side, said die bed is provided with raised ears il between which is pivoted a. curved foot lever is provided on its upper endvwith a weight i, and passed through said lever below said weight, is a set screw 10, the inner end i of which `is adapted to bear on the side of the table a2 to limit the downward and inward movement of said lever. Mounted centrally on the die bed i is a die support j having bottom flanges j2, and the die support j is secured to the die bed by means of angleshaped clamps j" and screws or bolts j, as clearly shown in Figs. 1, 2, 3 and 4.-. Mounted on the die support y' is a two part die k connected with the support by a tongue and groove construction, and the separate parts of the die c are movable transversely of the support j and transversely of the machine, and one part of said die is connected with the screw bolt i and the other part of said die is connected with the lever s by a link j.

The lever is is provided with a forked head 12, as shown in Fig. 4, with which the link j is connected, but the specific construction by which the separate arts of the die k are moved forwardly and) backwardly is immaterial, and any construction suitable for this purpose may be employed.

Copper conductors f3 similar to the conductor f are connected with the transformer f2 at f", and with both parts of the divided die c, as shown in Figs. 1 and 3, and in the construction shown, four of the conductors f3 are employed,'two in connection with each part of the divided die. I also provide means for cooling the separate parts of the divided die la, and in the construction shown,

this means consists in forming-water circulating passages 7c3 in said parts connected by a flexible loop-shaped tube member k* and having an inlet pipe k and an outlet pipe k". and the circulating passages 7c3 consist of two parallel longitudinal passages and cross passages k7 by which they are connected, but

my invention is not limited to the particu' lar means employed for circulating water through the separate parts of the die, and any suitable means may be provided for this purpose, and it will be understood that the flexible loop-shaped tube la* permits the separation of the said dies in the operation of the apparatus, as hereinafter described.

The transformer f2 is provided with the usual main circuit wires m and n by which an electric current is supplied to 4said transformen @ed the spel-ation:Otthfsarrts will be the. ame as yof ,others-cappa tus of this The operationoff the apparatus will-be ieadily\` understood Ifrom the foregoing `dej scription, when ,taken in l connection with the acconipaltlillgidr giungsaiid the follow ing fstate'inentgfgtli l t must .be underthatl .vvitl'i'wD-,l screw or bolt isconiiectledl in theA operai'- tion of theiapzparatus,whilefthe other part',

or that withsjivhich; the foot lever i? is con?,` nected is movable. ltransversely ofl the frame,

this movement being, slight, `but .being regulated accordingy t tliegvork` that is beingY done, or the diinensionsiofthework piece,

screw, pii ibolt`o1-',oth Qdevi'cevhich is being headed o'iijigi e ,operagtiom the lower end ofthe le er z An jged downwardly and peutwarjdlyf, penatien throws said lever and-,the link teinte tl'iegposition shown in dottedlines i in Figuw, and ,moves that part ofthe d-ivideddie ywith-which said link is coiinected to the yri glit; The work piece is then inserted between the'.-parts of the' die,v as shown in Fig; .5-,-. and the afoot lever re-4 leased-and theiweightfithrows the same back y intothe...positionlshovinffin F ig. 2, in whichposition, ,the separate parts of the die are forced ztogethe nditflieilwork'piece securely held,.il,nthea ormai-)position of the parts, zthe'.l electrode frikis; directly over the work piece, Vand at this stage `of the procedure, the arm e is manipulatedto depress the electrode e9 into contact with' `the head of the pin, bolt or `screw 0,. as indicated in dotted lines in Fig. 5. This operation also, completes the electric circuit through the conductors f and f2, and tliroughrtheelectrode and through the work piece, it being underor the separate parts thereof are insulated in the usual manner, and this operation raises the work piece to a high degree of heat. The arm e is now released and the 'weight e3 returns said arm and the electrode e to the position shown in Fig. 1. The arm c is now moved to the left and this brings the centi-al rotary member, which carries the plunger d2, directly over the work piece, as shown in Figs. 7 and 9, the foot lever LS is now operated or depressed, and this moves the arm 96 downwardly, and this depresses thepin g5, and the lower end of said pin plunge to this or-- lpos of forming heads on" Vmanner divided die' 7c,

f;` the central rotary member and -enteiatlieaperture g2 in therplateL-g at the fi-ear, nCl

peratesthe release aimi, and; the shaft e ated. and the cranlrbz depressies the..

and this operation depresses thel Hand throwsthe `riveting head or i member 4` dipf :saidI plunger into rcontact with lthe head or end of thebolt'or pin 0, as "'Ceallfl shown in Fig. 9andiasiind-,icated in ant-lathe .parts g1?, p ,to indicate algiialie or, clutchsof-faii kind ,for

the said brake ory clutch, but these parts are,- 4or may-be, of the usual or any preferred the brake or clutch release device 7i. Y

It will be understood that the. above n'iovement of the shaft I) cannot be producedexcept when the lower end of the pi'ny g5. enters the aperture g2 in the plate g, which is secured to the rear end of the arm c5 of the ycentralrotary member, and this :is lthe only function of said pin g5 `and platel The above described movements complete one operation ofthe machine, andthisoperation may be repeated as often and as rapidly as desired, andv at each of said operations, a new work piece may be inserted and operated upon.

lt will be understood that my.y invention is not limited tothe exact form, construction and operation of the various 'parts shown and described, and various changes plunger holder, in which said electrode and plunger holder move in a horizontal plane, and myy invention involves any positioning rof the various parts, Ain which said parts may be placed in order to accomplish the Vresult hereinset out.

Having fully described my invention what I claim as new and desire to secure by Letters Patent is 1. Ina machine'of the class described, a frame provided with a table, a die mounted on said table and composed of separate parts, one of which is movable toward and from the other, and a horizontally rotatable member mounted in said frame and carrying a vertically movable plunger and a vertically movable electrode, each of which is adapted to be thrown into vertical line with a. work piece held by the die.

2. A machine of the class described comprising a suitable frame provided with a suitably supported die consisting of two parts, one of which is movable toward and the usual jjclass, and. the part risfthe release device of from the` other, said parts being adapted to support a Work piece and a horizontally rotatable member mounted in the frame and provided with a vertically movable plunger and a vertically movable electrode, each of which is adapted to be thrown into vertical line with the Work piece supported by the die.

3. A machine of the class described comprisin a suitable frame provided with a suitaby supported die consisting of tivo parts, one of Which is movable toward and from the other, said parts being adapted to sup ort a work piece and a horizontally rotata le member mounted in the frame and provided with a vertically movable plunger and a vertically movable electrode, each of Which is adapted to be thrown into vertical line With the Work piece supported by the die, the separate parts of the die being also provided with water circulating passages.

4. In a machine of the class described, a frame provided with a die adapted to support a work piece, and a central rotary member mounted in the frame and provided with a. vertically movable plunger and a vertically movable electrode, and means for rotating said-member so as to throw the electrode and the plunger successively into vertical line with a work piece held by the die.

5. A machine of the'class described, comprising a frame providedwith a suitable die support, al die mounted on said support and adapted to hold a Work piece, a rotatable member mounted in the frame above the support of the die and provided with a vertically movable plunger and a vertically movable electrode, means for turning said rotatable member so as to bring the electrode and the plunger successively into vertical line with the Work piece held by the die, means for depressing the electrode, means for depressing the plunger, and mea-ns for passing an electric current through the electrode and through the die.

6. In a machine of the class described, a frame provided with a suitably supported die adapted to hold a Work piece, a rotatable member mounted in said frame above tle support of the die and provided with a ver- Copies of this patent may be obtained for ve cents each, by addressing the ticall movable electrode and a vertically movable plunger, a shaft mounted inthe top of the frame, means to permit the rotation of said shaft, means whereby the rotation of said shaft will depress said plunger, means for depressing the electrode, and means for turning the rotatable member so as to bring the electrode and the plunger successively into vertical line with the Work piece held by the die.

7. In a machine of the class described, a frame provided with a suitably supported die adapted to hold a Work piece, a rotatable member mounted in said frame above the support of the die and provided with a vertically movable electrode and a vertically movable plunger, a shaft mounted in the top of the frame, means to permit the rotation of said shaft, means whereby the rotation of said shaft Willdepress said plunger, means for depressing the electrode, and means for turning the rotatable member so as to `bring plunger successively the work piece'held .into vertical line with the Work piece.

n 9. An electric riveting machine having a Work piece holder, an electrode holder and plunger holder movable in a plane parallel with the Work piece holder or die bed, and means for moving said holder so as to bring the electrode and the plunger successively in position to operate on the Work piece.

In testimony that I claim the foregoing as my invention I have signed my name in presence of the subscribing witnesses this 29th day of December, 1913.

FRANK P. KOBERT.

Witnesses: C. MULREANY, S. ANDREWS.

Commissioner of Patents,L

Washington, D. C. v

said electrode and said die being 

